09B0025-Amend0002-Spec.pdf

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

THIS AMENDMENT DOES NOT EXTEND THE 14 JULY 2009 BID OPENING AT 11:00 A.M.

(Continued)

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

MODIFICATION OF CONTRACTS/ORDER

NO.

E. IMPORTANT: Contractor

15B. CONTRACTOR/OFFEROR

is not, copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer tended.

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing Items 8 and 15, and returning submitted; or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDG- MENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

is extended, B.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CON-

TRACT ORDER NO. IN ITEM 10A.

2. AMENDMENT/MODIFICATION NO.

6. ISSUED BY

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS,

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) is required to sign this document and return

15A. NAME AND TITLE OF SIGNER (Type or print)

PAGE OF PAGES 1. CONTRACT ID CODE

5. PROJECT NO. (If applicable) 4. REQUISITION/PURCHASE REQ. NO. 3. EFFECTIVE DATE

7. ADMINISTERED BY (If other than Item 6)

15C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16B. UNITED STATES OF AMERICA

BY

16C. DATE SIGNED

9A. AMENDMENT OF SOLICITATION NO.

9B. DATED (SEE ITEM 11)

10B. DATED (SEE ITEM 13)

CODE CODE

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

is not ex-copies to the issuing office.

NSN 7540-01-152-8070

PREVIOUS EDITION UNUSABLE

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA

FAR (48 CFR) 53.243

(Signature of person authorized to sign) (Signature of Contracting Officer)

USAPPC V2.00

10A.

30-105-02

U.S. Army Engineer District, Philadelphia POC: Emily Sheaffer Wanamaker Building, 100 Penn Square East Philadelphia, Pennsylvania 19107-3390

U.S. Army Engineer District, Philadelphia Contracting Division-Room 643 Wanamaker Building, 100 Penn Square East Philadelphia, Pennsylvania 19107-3390

CODE

W912BU E5CTCEMS

FACILITY CODE

0002 2 July 2009 W25PHS91255974

W912BU-09-B-0025

12 June 2009

Recovery, Repair Town Point Wharf, Inland Waterway Delaware River to Chesapeake Bay, Delaware and Maryland

This page was intentionally left blank for duplex printing.

Amendment No. 0002 Invitation for Bids

W912BU-09-B-0025

14. DESCRIPTION OF AMENDMENT (continued)

a. GENERAL NOTE: The following specification sections have been amended. Some pages have been provided that contain no changes in order to enable double-sided printing, or to provide information that has moved as a result of changes that were made on other sheets. All pages that contain revisions have been annotated with “Amendment No. 0002” in the header. All changes on a page are shown in bold italics.

b. SECTION 00610 – PRE-AWARD SURVEY SUBMITTAL REQUIREMENTS: Please add new Section 00610, attached hereto.

c. SECTION 00805 – CONTRACT ADMINISTRATION: Please add new Section 00805, attached hereto.

d. SECTION 00815 – WAGE RATES: Please delete pages 1 through 3 and substitute new pages 1 through 3, attached hereto.

e. SECTION 01 33 00 – SUBMITTAL PROCEDURES: Please delete pages 12 and 13 and substitute new pages 12 and 13, attached hereto.

f. SECTION 03 31 00 – CAST-IN-PLACE LIGHTWEIGHT STRUCTURAL CONCRETE: Please delete pages 15 and 16 and substitute new pages 15 and 16, attached hereto.

g. SECTION 31 23 00 – EXCAVATION, FILLING AND BACKFILLING: Please delete pages 3 through 6 and substitute new pages 3 through 6, attached hereto.

h. SECTION 31 41 16 – VINYL SHEET PILING: Please delete Section 31 41 16 in its entirety and substitute new Section 31 41 16, attached hereto.

i. CONTRACT DRAWINGS: Please delete previously issued Drawing 62026, dated 12 June 2009. Please substitute revised Drawing 62026, with a revision date of 02 July 2009, attached hereto.

j. Please indicate receipt of this amendment on Standard Form 30 (AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT) as Amendment No. 0002. Failure to acknowledge all amendments may be cause for rejection of the offer.

THIS PAGE INTENTIONALLY LEFT BLANK

SECTION 00610

PRE-AWARD SURVEY SUBMITTAL REQUIREMENTS

Section 00610 Page 1

Award of the contract will be made as a whole to the lowest responsive and responsible bidder whose bid conforms to all requirements of the specifications. Subsequent to the bid opening, the apparent low bidder will be required to submit pre-award survey information relating to Specialized Experience. The requirements for each factor are detailed below:

A) Specialized Experience

Bidder shall submit examples of relevant projects constructed within the past (12) years for which the bidder was the responsible Contractor or for which the associated proposed Subcontractor performed the relevant work. To be considered relevant, submitted projects must demonstrate experience in the following areas of work:

(i) A minimum of three (3) projects demonstrating experience with driving vinyl sheeting using satisfactory installation methods and tools appropriate for this project;

(ii) A minimum of two (2) projects demonstrating experience with mix design and placement of lightweight concrete.

B) Personnel

For all submitted projects, include name, location and a brief description of each project; name, address and phone number for point of contact of owner or Government agency for which the work was done; dates the work was performed.

Submittal shall also include the names of pertinent Prime Contractor or Sub- Contractor personnel proposed for this project, their relevant qualifications and the duties they performed on the projects submitted as examples.

SECTION 00805-1

CONTRACT ADMINISTRATION DATA

G.1 ACCOUNTING AND APPROPRIATION DATA:

TO BE FURNISHED AT TIME OF AWARD

G.2 CONTRACT ADMINISTRATION IS RETAINED BY THE CONTRACTING OFFICER:

US Army Engineer District, Philadelphia ATTN: CENAP-CT-C (Emily M. Sheaffer) Wanamaker Building, 100 Penn Square East Philadelphia, Pennsylvania 19107-3390

(215) 656-6912

G.3 PAYMENT BY:

US Army Corps of Engineers

FINANCE CENTER

5720 Integrity Drive

Millington, Tennessee 38054-5005

G.4 BILLING ADDRESS:

Invoices shall be forwarded as follows:

US Army Engineer District, Philadelphia

ATTN: CENAP-OP-TN

Wanamaker Building, 100 Penn Square East Philadelphia, Pennsylvania 19107-3390

G.5 TECHNICAL INQUIRIES:

All technical inquiries should be sent in writing to:

Pre-Award: Emily M. Sheaffer (phone) 215-656-6912 (fax) 215-656-6780 Post Award: (To be furnished upon award)

W912BU-09-B-0025 00805-1

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Section 00815 Page 1

General Decision Number: MD080040 06/26/2009 MD40

Superseded General Decision Number: MD20070040

State: Maryland

Construction Type: Heavy

Counties: Cecil and Queen Anne's Counties in Maryland.

HEAVY CONSTRUCTION PROJECTS (Excluding Sewer and Water Lines)

Modification Number Publication Date 0 02/08/2008 1 03/07/2008 2 07/04/2008 3 09/05/2008 4 12/12/2008 5 06/26/2009

BOIL0193-002 10/01/2008

Rates Fringes

Boilermakers:....................$ 36.61 15.46

CARP0101-002 04/01/2008

Rates Fringes

MILLWRIGHT.......................$ 26.37 9.19

ELEC0313-006 12/01/2007

Rates Fringes

Electricians.....................$ 33.92 7.75%+14.15

* PAIN0051-005 06/01/2009

Rates Fringes

Painters:

Bridges/Heavy Highway/Lead Abatement & Flame/Thermal Spray.......................$ 30.32 7.86 Commercial/Repaint/Remodel and Mold Remediation........$ 24.64 7.86 Industrial..................$ 26.68 7.86

SUMD1993-008 01/01/1993

Rates Fringes

Carpenters.......................$ 11.17 .44

Section 00815 Page 2

Laborers (Including Pipelaying)...........$ 10.03 1.71

Power equipment operators:

Backhoes....................$ 12.47 2.34

Truck drivers....................$ 10.00 1.01

WELDERS - Receive rate prescribed for craft performing operation to which welding is incidental.

Unlisted classifications needed for work not included within the scope of the classifications listed may be added after award only as provided in the labor standards contract clauses (29CFR 5.5 (a) (1) (ii)).

In the listing above, the "SU" designation means that rates listed under the identifier do not reflect collectively bargained wage and fringe benefit rates. Other designations indicate unions whose rates have been determined to be prevailing.

WAGE DETERMINATION APPEALS PROCESS

1.) Has there been an initial decision in the matter? This can be:

* an existing published wage determination

* a survey underlying a wage determination

* a Wage and Hour Division letter setting forth a position on a wage determination matter

* a conformance (additional classification and rate) ruling

On survey related matters, initial contact, including requests for summaries of surveys, should be with the Wage and Hour Regional Office for the area in which the survey was conducted because those Regional Offices have responsibility for the Davis-Bacon survey program. If the response from this initial contact is not satisfactory, then the process described in 2.)

and 3.) should be followed.

With regard to any other matter not yet ripe for the formal process described here, initial contact should be with the Branch of Construction Wage Determinations. Write to:

Branch of Construction Wage Determinations Wage and Hour Division U.S. Department of Labor

Section 00815 Page 3

200 Constitution Avenue, N.W.

Washington, DC 20210

2.) If the answer to the question in 1.) is yes, then an interested party (those affected by the action) can request review and reconsideration from the Wage and Hour Administrator (See 29 CFR Part 1.8 and 29 CFR Part 7). Write to:

Wage and Hour Administrator U.S. Department of Labor 200 Constitution Avenue, N.W.

Washington, DC 20210

The request should be accompanied by a full statement of the interested party's position and by any information (wage payment data, project description, area practice material, etc.) that the requestor considers relevant to the issue.

3.) If the decision of the Administrator is not favorable, an interested party may appeal directly to the Administrative Review Board (formerly the Wage Appeals Board). Write to:

Administrative Review Board U.S. Department of Labor 200 Constitution Avenue, N.W.

Washington, DC 20210

4.) All decisions by the Administrative Review Board are final.

END OF GENERAL DECISION

SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 3 OF 4 PAGES

Repairs to Town Point Wharf

01 35 50 Activity Hazard Analysis Plan Emergency Management Plan Diving Operations Manual Dive Personnel Qualifications Air Quality Certifications Daily Logs

01 45 04 SD-07 Certificates G CORQuality Control Plan G CORQualifications G CORChanges to Quality Control Plan G CORDaily CQC Report G CORPreparatory, Initial, and Final

Phase Meeting Minutes 01 50 00 SD-01 Preconstruction Submittals

G CORTemporary Facilities Plan G CORTraffic Control Plan

01 57 20 SD-01 Preconstruction Submittals G COREnvironmental Protection Plan G CORSoil Erosion and Sediment

Control Plan G CORLocation of Storage Facilities

SD-07 Certificates G CORLandfill

01 78 00 SD-07 Certificates G CORProgress Prints

SD-11 Closeout Submittals

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

CONTRACTOR:

SCHEDULE DATES

CONTRACTOR

ACTION

APPROVING AUTHORITY

A C T I V I T Y

N O

T R A N S M I T T A L

N O

S P E C

S E C T

DESCRIPTION

ITEM SUBMITTED

P A R A G R A P H

C L A S S I F I C A T I O N

G O V T

O R

A E

R E V W

R SUBMIT

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

A C T I O N

C O D E

DATE

OF

ACTION

DATE FWD

TO APPR

AUTH/

DATE RCD

FROM

CONTR

DATE FWD

TO OTHER

REVIEWER

DATE RCD

FROM OTH

REVIEWER

A C T I O N

C O D E

DATE

OF

ACTION

MAILED

TO

CONTR/

DATE RCD

FRM APPR

AUTH REMARKS

(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n) (o) (p) (q) (r)

Section 01 33 00 Page 12

SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 4 OF 4 PAGES

Repairs to Town Point Wharf

01 78 00 G DOAs-Built Drawings 03 31 00 SD-01 Preconstruction Submittals

G DOWork Plan SD-03 Product Data

1.6 G DOMixture Proportions

SD-06 Test Reports

3.8 G DOTesting and Inspection for

Contractor Quality Control

SD-07 Certificates

1.4 G DOQualifications

31 23 00 SD-06 Test Reports

3.12 G DOTesting

31 41 16 SD-01 Preconstruction Submittals

[DELETION]

G DOEquipment Descriptions SD-02 Shop Drawings

G DOShop Drawings SD-04 Samples

G DOVinyl Sheet Pile Sample SD-06 Test Reports

1.5.1Driving Records SD-07 Certificates

1.6Materials Test Certificates

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

CONTRACTOR:

SCHEDULE DATES

CONTRACTOR

ACTION

APPROVING AUTHORITY

A C T I V I T Y

N O

T R A N S M I T T A L

N O

S P E C

S E C T

DESCRIPTION

ITEM SUBMITTED

P A R A G R A P H

C L A S S I F I C A T I O N

G O V T

O R

A E

R E V W

R SUBMIT

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

A C T I O N

C O D E

DATE

OF

ACTION

DATE FWD

TO APPR

AUTH/

DATE RCD

FROM

CONTR

DATE FWD

TO OTHER

REVIEWER

DATE RCD

FROM OTH

REVIEWER

A C T I O N

C O D E

DATE

OF

ACTION

MAILED

TO

CONTR/

DATE RCD

FRM APPR

AUTH REMARKS

(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n) (o) (p) (q) (r)

Section 01 33 00 Page 13 large to permit a free flow of concrete. The concrete shall be deposited so that it enters the mass of the previously placed concrete from within, displacing water with a minimum disturbance to the surface of the concrete. The discharge end of the pump line or tremie shaft shall be kept continuously submerged in the concrete. The underwater seal at start of placing shall not produce undue turbulence in the water. The tremie shaft shall be kept full of concrete to a point well above the water surface.

Placement shall proceed without interruption until the concrete has been brought to the required height. The tremie shall not be moved horizontally during a placing operation, and a sufficient number of tremies shall be provided so that the maximum horizontal flow of concrete will be limited to 15 feet. Concrete shall not be deposited in running water or in water with a temperature below 35 degrees F.

3.6 JOINTS

Joints shall be located and constructed as approved. [DELETION.] All reinforcement shall be continued across joints. [DELETION.]

3.6.1 Construction Joints

[DELETION.] Fresh concrete shall not be placed against adjacent hardened concrete until it is at least 24 hours old. Construction joints shall be located as indicated or approved. Where concrete work is interrupted by weather, end of work shift or other similar type of delay, location and type of construction joint shall be subject to approval of the Contracting Officer. Reinforcing steel shall extend through construction joints.

3.7 CURING AND PROTECTION

No curing is necessary for the concrete covered by the vinyl sheet pile.

The horizontal surface of the concrete shall be cured by an approved method for 7 days. All references to curing are strictly with regards to the horizontal surface.

3.7.1 General

Immediately after placement, concrete shall be protected from premature drying, extremes in temperatures, rapid temperature change, mechanical injury and damage from rain and flowing water for the duration of the curing period. Air and forms in contact with concrete shall be maintained at a temperature above 50 degrees F for the first 3 days and at a temperature above 32 degrees F for the remainder of the specified curing period. Exhaust fumes from combustion heating units shall be vented to the outside of the enclosure, and heaters and ducts shall be placed and directed so as not to cause areas of overheating and drying of concrete surfaces or to create fire hazards. Materials and equipment needed for adequate curing and protection shall be available and at the site prior to placing concrete. No fire or excessive heat, including welding, shall be permitted near or in direct contact with the concrete at any time. Except as otherwise permitted by paragraph Membrane Forming Curing Compounds, moist curing shall be provided for any areas to receive floor hardener, any paint or other applied coating, or to which other concrete is to be

Section 03 31 00 Page 15

3.7.2 Moist Curing

Concrete to be moist-cured shall be maintained continuously wet for the entire curing period, commencing immediately after finishing. If water or curing materials used stain or discolor concrete surfaces which are to be permanently exposed, the concrete surfaces shall be cleaned as approved.

When wooden forms are left in place during curing, they shall be kept wet at all times. If steel forms are used in hot weather, nonsupporting vertical forms shall be broken loose from the concrete soon after the concrete hardens and curing water continually applied in this void. If the forms are removed before the end of the curing period, curing shall be carried out as on unformed surfaces, using suitable materials. Surfaces shall be cured by ponding, by continuous sprinkling, by continuously saturated burlap or cotton mats, or by continuously saturated plastic coated burlap. Burlap and mats shall be clean and free from any contamination and shall be completely saturated before being placed on the concrete. The Contractor shall have an approved work system to ensure that moist curing is continuous 24 hours per day.

3.7.3 Membrane Forming Curing Compounds

Concrete may be cured with a pigmented curing compound in lieu of moist curing. Membrane curing shall not be used on surfaces that are to receive any subsequent treatment depending on adhesion or bonding to the concrete, including surfaces to which a smooth finish is to be applied or other concrete to be bonded. Membrane curing compound shall not be used on surfaces that are maintained at curing temperatures with free steam.

Curing compound shall be applied to formed surfaces immediately after the forms are removed and prior to any patching or other surface treatment except the cleaning of loose sand, mortar, and debris from the surface.

All surfaces shall be thoroughly moistened with water. The curing compound shall be applied in a two-coat continuous operation by approved motorized power-spraying equipment operating at a minimum pressure of 75 psi, at a uniform coverage of not more than 400 square feet per gallon for each coat, and the second coat shall be applied perpendicular to the first coat.

Concrete surfaces which have been subjected to rainfall within 3 hours after curing compound has been applied shall be resprayed by the method and at the coverage specified. Surfaces on which clear compound is used shall be shaded from direct rays of the sun for the first 3 days. Surfaces coated with curing compound shall be kept free of foot traffic, and from other sources of abrasion and contamination during the curing period.

3.7.4 Impervious Sheeting

Except for plastic coated burlap, impervious sheeting alone shall not be used for curing. Surfaces shall be thoroughly wetted and be completely covered with the sheeting. Sheeting shall be at least 18 inches wider than the concrete surface to be covered. Covering shall be laid with light-colored side up. Covering shall be lapped not less than 12 inches and securely weighted down or shall be lapped not less than 4 inches and taped to form a continuous cover with completely closed joints. The sheet shall be weighted to prevent displacement so that it remains in contact with the concrete during the specified length of curing. Sheets shall be immediately repaired or replaced if tears or holes appear during the curing

Section 03 31 00 Page 16 bonded. Concrete containing silica fume shall be initially cured by fog misting during finishing, followed immediately by continuous moist curing.

Except for plastic coated burlap, impervious sheeting alone shall not be used for curing.

CONTRACT CLAUSES. Satisfactory material removed below the depths indicated, without specific direction of the Contracting Officer, shall be replaced, at no additional cost to the Government, with satisfactory materials to the indicated excavation grade. Satisfactory material shall be placed and compacted as specified in paragraph FILLING AND BACKFILLING.

Determination of elevations and measurements of approved overdepth excavation of unsatisfactory material below grades indicated shall be done under the direction of the Contracting Officer.

3.3.1 Excavation of existing riprap and associated layers

Existing riprap, the existing underlying layer of bedding stone and the existing backfill layer shall be removed as necessary to install the new vinyl sheetpiles, new concrete seals and the new underlying bedding stone layer. The riprap and bedding stone shall be stockpiled for re-installation to the existing lines after the installation of the concrete seals. The backfill may be re-used, if it satisfies the criteria for satisfactory material.

3.3.2 Monitoring of Movement of Existing Bulkhead

The depths of the existing sheet piles are undetermined. The Contractor shall monitor the existing steel bulkhead for excessive movement or kick-out during excavation. If any such movement is detected, the Contractor shall notify the Contracting Officer immediately.

3.4 SHORING

Shoring, including sheet piling, shall be furnished and installed as necessary to protect workmen, banks, adjacent paving, structures, and utilities. Shoring, bracing, and sheeting shall be removed as excavations are backfilled, in a manner to prevent caving.

3.5 CLASSIFICATION OF EXCAVATION

Excavation will be unclassified regardless of the nature of material encountered.

3.6 BLASTING

Blasting will not be permitted.

3.7 EXCAVATED MATERIALS

Satisfactory excavated material required for fill or backfill shall be placed in the proper section of the permanent work required under this section or shall be separately stockpiled if it cannot be readily placed.

Satisfactory material in excess of that required for the permanent work and all unsatisfactory material shall be disposed of outside the limits of Government-controlled property at the Contractor's responsibility.

3.8 SUBGRADE PREPARATION

Unsatisfactory material in surfaces to receive bedding stone or in the area to be cleared and grubbed shall be removed and replaced with satisfactory materials as directed by the Contracting Officer. The surface shall be scarified to a depth of 6 inches before the fill is started. When subgrades are less than the specified density, the ground surface shall be broken up to a minimum depth of 6 inches, pulverized, and compacted to the

Section 31 23 00 Page 3 specified density. When the subgrade is part fill and part excavation or natural ground, the excavated or natural ground portion shall be scarified to a depth of 12 inches and compacted as specified for the adjacent fill.

Material shall not be placed on surfaces that are muddy, frozen, or contain frost. Compaction shall be accomplished by hand-operated compactors.

Material shall be moistened or aerated as necessary to provide the moisture content that will readily facilitate obtaining the specified compaction with the equipment used. Minimum subgrade density shall be as specified in paragraph FILLING AND BACKFILLING.

3.9 FILLING AND BACKFILLING

Satisfactory materials shall be used in bringing fills and backfills to the lines and grades indicated and for replacing unsatisfactory materials.

Only hand-operated compactors may be used. Satisfactory materials shall be placed in horizontal layers not exceeding 12 inches in loose thickness.

After placing, each layer shall be plowed, disked, or otherwise broken up, moistened or aerated as necessary, thoroughly mixed and compacted as specified. Backfill shall be brought to indicated finish grade. Backfill shall not be placed in wet or frozen areas. Backfill shall be compacted in layers not more than 9 inches in compacted thickness with power-driven hand tampers suitable for the material being compacted. Each layer of fill and backfill shall be compacted to a percentage of maximum density not less than 95%:

Approved compacted subgrades that are disturbed by the Contractor's operations or adverse weather shall be scarified and compacted as specified herein before to the required density prior to further construction thereon.

3.10 PLACEMENT OF BEDDING STONE

[DELETION.] Only after it is determined that all unsatisfactory material has been removed and replaced and any other necessary corrective actions have been taken, then bedding stone shall be placed to the lines and dimensions as shown on the drawings. All surfaces shall be protected from erosion resulting from ponding or flow of water.

3.11 REPLACEMENT OF STOCKPILED RIPRAP AND BEDDING STONE

No less than seven days after the concrete seals have been installed, the stockpiled bedding layer and the stockpiled riprap shall be replaced to the lines and grades indicated on the drawings.

3.12 TESTING

Testing shall be the responsibility of the Contractor and shall be performed at no additional cost to the Government. Testing shall be performed by an approved commercial testing laboratory or may be performed by the Contractor subject to approval. Field in-place density shall be determined in accordance with ASTM D 2922. The calibration curves shall be checked and adjusted if necessary by the procedure described in ASTM D 2922, paragraph ADJUSTING CALIBRATION CURVE. ASTM D 2922 results in a wet unit weight of soil and when using this method ASTM D 3017 shall be used to determine the moisture content of the soil. The calibration curves furnished with the moisture gauges shall also be checked along with density calibration checks as described in ASTM D 3017. The calibration checks of both the density and moisture gauges shall be made at the beginning of a job on each different type of material encountered and at intervals as

Section 31 23 00 Page 4 directed by the Contracting Officer. The following number of tests, if performed at the appropriate time, shall be the minimum acceptable for each type operation.

3.12.1 In-Place Densities

In-place density and moisture content test results shall be included with the Contractor's daily construction quality control reports.

3.12.1.1 In-Place Density of Subgrades

One test per 500 square foot or fraction thereof.

3.12.1.2 In-Place Density of Fills and Backfills

The density for each lift of fill or backfill materials for areas less than 20 feet in width, which are compacted with hand or hand-operated machines shall be tested as follows: One test per each length of 50 feet along the area in which the concrete seal is to be placed along the exterior side of the steel sheet pile and one test for the area to be cleared, grubbed and filled. In-place densities shall be checked by ASTM D 1556 as follows:

One check per lift for each 100 linear feet of long narrow fills, and a minimum of 2 checks per lift for other fill and backfill areas.

3.12.2 Moisture Content

In the stockpile or excavation areas, a minimum of two tests per day is required during stable weather conditions. During unstable weather, tests shall be made as dictated by local conditions and approved moisture content shall be tested in accordance with ASTM D 2216.

3.12.3 Optimum Moisture and Laboratory Maximum Density

Tests shall be made for each type material or source of material, including borrow material to determine the optimum moisture and laboratory maximum density values. One representative test per 50 cubic yards of fill and backfill, or when any change in material occurs which may affect the optimum moisture content or laboratory maximum density will be made.

3.13 SPREADING TOPSOIL

Any areas from which topsoil has been removed shall be topsoiled. The surface shall be free of materials that would hinder planting or maintenance operations. The subgrade shall be pulverized to a depth of 2 inches by disking or plowing for the bonding of topsoil with the subsoil.

Topsoil shall then be uniformly spread, graded, and compacted to the thickness, elevations, slopes shown, and left free of surface irregularities. Topsoil shall be compacted by one pass of a cultipacker, roller, or other approved equipment weighing 100 to 160 pounds per linear foot of roller. Topsoil shall not be placed when the subgrade is frozen, excessively wet, extremely dry, or in a condition otherwise detrimental to seeding, planting, or proper grading.

3.14 PROTECTION

Settlement or washing that occurs in topsoiled, or backfilled areas prior to acceptance of the work, shall be repaired and grades reestablished to the required elevations and slopes.

Section 31 23 00 Page 5

3.15 Measurement and Payment

No separate measurement or payment will be made for the work specified in this section and all costs in connection therewith shall be included in the contract lump sum price.

-- End of Section --

Section 31 23 00 Page 6

SECTION 31 41 16

VINYL SHEET PILING

PART 1 GENERAL

1.1 SCOPE

The work covered by this section consists of furnishing all plant, equipment, labor and materials and performing all operations in connection with the installation of (PVC) vinyl sheet piling in accordance with these specifications and applicable drawings.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM D 4216 (2006) Rigid Poly (Vinyl Chloride) (PVC) and Related PVC and Chlorinated Poly (Vinyl Chloride) (CPVC) Building Products Compounds

1.3 MEASUREMENT AND PAYMENT

No separate measurement or payment will be made for the work specified in this section and all costs in connection therewith shall be included in the contract lump sum price.

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

NOTE: Any submittals classified as "SD-01 Preconstruction Submittals" require approval prior to mobilization to the contract work site. All other submittals, classified as "SD-02" through "SD-11," require approval prior to commencing the particular task to which the submittal is associated.

SD-01 Preconstruction Submittals

[DELETION.]

Equipment Descriptions; G, DO

The Contractor shall submit for approval by the Contracting Officer, prior to commencement of work, a written statement addressing the appropriate installation equipment / tools / mandrel and driving method as dictated by the soil conditions.

The Contractor (or Sub-Contractor) shall have had prior experience with driving vinyl sheeting and shall provide a list of previous

Section 31 41 16 Page 1 jobs that demonstrate a satisfactory installation method. In addition, the Contractor shall coordinate with the vinyl manufacturer their recommendations concerning the proper equipment / tools / mandrel to be used. Soil conditions will determine if a vibratory hammer with a steel mandrel sheet (hard driving, compacted sand) or an impact hammer without a mandrel (soft driving, marsh, loose soil) or combination of both driving methods, is required. The use of a water jet will be permitted.

SD-02 Shop Drawings

Shop Drawings; G, DO

Shop drawings for sheet piling shall be submitted for approval.

The shop drawings shall include sheet pile section properties, driving sequence, location of piling to be installed, pieces used to turn all required corners as indicated in the drawings and a description of the method for handling piling to prevent permanent deflection, distortion or damage to piling interlocks, plus type of transportation vehicle for bringing piles to point of installation.

SD-04 Samples

Vinyl Sheet Pile Sample; G, DO

The Contractor shall provide a sample of the vinyl sheet pile and submit to the Contracting Officer for approval, prior to the installation.

SD-06 Test Reports

Driving Records

Records of the sheet piling driving operations shall be submitted after driving is completed. These records shall provide a system of identification which shows the disposition of approved piling in the work, driving equipment performance data, piling penetration rate data, piling dimensions and top and bottom elevations of installed piling.

SD-07 Certificates

Materials Test Certificates

The Contractor shall submit to the Contracting Officer material test certificates indicating conformance with ASTM D 4216 and all other requirements as specified herein. Sheet piling materials shall be certified by the manufacturer to meet the specified chemical, mechanical and section property requirements of this specification prior to delivery to the site.

1.5 QUALITY CONTROL

1.5.1 General

The Contractor shall establish and maintain quality control for pile driving records and operations to assure compliance with contract and manufacturer's specifications and maintain records of his quality control

Section 31 41 16 Page 2 for all construction operations including, but not limited to, the following:

(1) Accurate location, alignment and plumbness of piling.

(2) Full and proper engagement of interlocks.

(3) Driving (Installation rate).

(4) Final position; depth of penetration; tip and cut-off elevations.

(5) Uplift and vertical tolerances after driving.

(6) Location and elevation of any obstruction encountered and action directed by Contracting Officer.

(7) Pulled piles and redriving.

(8) Aluminum capping.

(9) Stockpiling and storage.

(10) Removal and disposal of damaged piles.

1.5.2 Reporting

The original and two copies of these records, as well as the records of corrective action taken, shall be furnished the Government daily. Format of the report shall be as prescribed in Section 01 45 04, "CONTRACTOR

QUALITY CONTROL".

1.6 DELIVERY, STORAGE AND HANDLING

Materials delivered to the site shall be new and undamaged and shall be accompanied by materials test certificates. Sheet piling shall be stored and handled in the manner recommended by the manufacturer to prevent permanent deflection, distortion or damage to the interlocks. Storage of sheet piling should also facilitate required inspection activities.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Poly (Vinyl Chloride) Sheet Pile

The sheet piling shall be manufactured by CMI (ShoreGuard). The sheets shall be 21 feet in length, Series 950, (.650" thickness, 59 Section Modulus, 2,667 Design Strength) or an approved equal.

Certified Virgin Materials as defined by this specification. Recycled or reprocessed materials of any kind cannot be used in any amount in the outer surfaces or cap-stock of a co-extruded sheet piling. The sheeting shall be homogeneous throughout and free from visible cracks, flaws, foreign inclusions or other injurious defects. The sheeting and capping plates shall be uniform in physical properties and the color "Grey" and "Black", respectively. All sheet pile shall be provided in full length with no splices.

Section 31 41 16 Page 3

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 Placing and Driving

3.1.1.1 Placing

Pilings shall be carefully located as shown on the drawings. Pilings shall be placed as true to line as possible. Suitable temporary wales, templates, or guide structures shall be provided to insure that the piles are placed and driven to the correct alignment. Pilings properly placed and driven shall be interlocked throughout their length with adjacent pilings to form a continuous diaphragm throughout the length or run of piling wall.

3.1.1.2 Driving

As shown on the contract drawings in the section depicting existing conditions, the Contractor is advised that below the existing riprap layer, a layer of aggregate bedding will be encountered. The Contractor is also advised that buried stumps, roots and similar debris might be encountered periodically on the sheet pile wall alignment. The Contractor shall determine and use the proper size/model of equipment to counteract difficult driving and the above obstructions. All piles shall be driven to the depths shown on the drawings and shall extend to the top of wall elevation indicated. A tolerance of 1-1/2 inches above or below the indicated cut-off elevation will be permitted. The driving hammer shall be maintained in proper alignment during driving operations by use of leads or guides attached to the hammer. A protecting cap shall be employed if an impacted hammer is used for driving, to absorb impact shock and prevent damage to the tops of pilings. Pilings damaged during driving or driven out of interlock shall be removed and replaced at the Contractor's expense. Driving with the aid a water jet will be permitted. If a "mandrel" is used to install vinyl, the "water gallery" lubrication to reduce friction and separate the vinyl sheet from the mandrel is acceptable. Adequate precautions shall be taken to insure that piles are driven/installed vertically and horizontally plumb.

3.1.1.3 Obstructions

In case of an obstruction, piling/s will be allowed to remain above final grade until the obstruction is identified by the Contracting Officer and a remedy is provided to the Contractor. If it is determined by the Contracting Officer that an obstruction restricts driving operations and that the obstruction cannot be removed, the Contractor will be directed by the Contracting Officer to either cut the piling/s to design grade or provide the Contractor an alignment change that by-passes the obstruction.

Payment for the additional labor and materials necessitated by such changes will be made in conformance with the CHANGES clause of the CONTRACT CLAUSES.

3.1.2 Emergency Locking System on Pile Driving Head

All pile driving equipment shall be equipped so as to prevent piles from falling when a single or multiple power failure occurs after the pile driving head is attached to the pile.

Section 31 41 16 Page 4

3.1.3 Inspection of Driven Piling

The Contractor shall inspect the interlocked joints of driven pilings extending above ground. Pilings found to be damaged during driving or driven out of interlock shall be removed and replaced.

3.1.4 Pulling and Redriving

The Contractor may be required to pull selected piles after driving, for test and inspection, to determine the condition of the piles. Any pile so pulled and found to be damaged to the extent that its usefulness in the structure is impaired shall be removed from the work and the Contractor shall furnish and drive a new pile to replace the damaged pile, at the expense of the Contractor. Piles pulled and found to be in satisfactory condition shall be redriven, also at the expense of the Contractor. For bidding purposes it is estimated that three (3) previously driven sheet piles be pulled, inspected and redriven (replacing with new as required).

3.1.5 Qualifications

The Contractor shall have prior experience with driving vinyl sheeting and shall provide a list or previous job(s) that demonstrate a satisfactory installation method. In addition, the Contractor shall coordinate with the vinyl sheet pile manufacturer (e.g. CMI, Inc. phone 1-800-256-8857) their recommendations concerning the proper vibratory plates or hammer / equipment and tools.

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Section 31 41 16 Page 5

1.6 DELIVERY, STORAGE AND HANDLING